Movement beneath a slab can put buried pipework under strain.
Fort Worth has many slab-on-grade homes, where supply lines can run beneath or through concrete instead of behind a wall or above a ceiling. A leak in that pipework does not always leave an obvious stain indoors. Water can travel along a pipe path or beneath the slab before it becomes visible at an edge of the foundation, through a warm area of floor, or as persistent moisture in one spot.
Seasonal clay movement adds pressure at buried lines, fittings, and places where piping enters the structure. As the ground dries and later takes on moisture, it shifts against rigid pipework. That movement is one reason locating the actual path of a hidden leak matters before choosing a repair.
Long hot periods also dry the surface soil quickly, so a shallow leak outside does not always leave a lasting wet patch. We use the evidence available at the house to narrow down the leak location and assess its likely route, then determine whether a focused repair, a reroute, or further evaluation of the pipe is the sensible next step.